class Object
  # The hidden singleton lurks behind everyone
  def metaclass; class << self; self; end; end
  def meta_eval &blk; metaclass.instance_eval &blk; end
 
  # Adds methods to a metaclass
  def meta_def name, &blk
    meta_eval { define_method name, &blk }
  end
 
  # Defines an instance method within a class
  def class_def name, &blk
    class_eval { define_method name, &blk }
  end
end